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Automation Integration · head to head

Celigo vs Windmill

Celigo logo

Celigo

Automation Integration

The iPaaS platform for mid-market and enterprise

From
$400/month
Rated
-
Full reviewWebsite
Windmill logo

Windmill

Automation Integration

Open-source developer platform for building scripts, workflows, and internal apps

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only Windmill has a free tier, so it costs nothing to try first.
  • Each has a real cost: Celigo prices are not published on any of the three editions; Windmill free self-hosted tier caps SSO users at 10 and workspaces at 3, requiring Enterprise for larger teams.
  • They diverge on capability: Celigo covers App integration, Windmill covers Script-to-workflow engine.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Celigo and Windmill actually diverge.

Attributes where Celigo and Windmill differ
AttributeCeligoWindmill
Starting price$400/monthFree
Pricing modelsubscriptionopen-source
Free tierNoYes
PlatformsWeb, Mobileweb, api, linux, windows, mac
Founded2008Unknown

Identical on both: user rating (Not yet rated), category (Automation Integration).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Celigo

  • App integration
  • Process automation
  • Master data management
  • API management
  • Workflow builder
  • Error handling
  • Analytics
  • 800+ apps

Only in Windmill

  • Script-to-workflow engine
  • Auto-generated UIs
  • Self-hosted deployment
  • Git sync
  • SSO support
  • Audit logs

What people use each for

The jobs each tool is most often brought in to do.

Celigo

  • Integrating NetSuite with ecommerce and CRM systemsnot Windmill
  • Prebuilt integration templates between common business applicationsnot Windmill
  • Building custom flows between internal systemsnot Windmill
  • Governance and auditability over integrations on the higher editionsnot Windmill

Windmill

  • Turning ad-hoc scripts into scheduled jobs and APIsnot Celigo
  • Building internal tools from existing Python/TypeScript codenot Celigo
  • Self-hosted automation for engineering teamsnot Celigo
  • Orchestrating multi-language workflowsnot Celigo

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Celigo

  • Prices are not published on any of the three editions
  • Billed on endpoints and flows, so the cost is driven by how many systems you connect rather than by volume through them
  • API Builder, lookup caching and a sandbox all require the Professional edition
  • Single sign-on is optional on Standard and included from Professional up
  • Unlimited endpoints and the full governance features are Enterprise only

Windmill

  • Free self-hosted tier caps SSO users at 10 and workspaces at 3, requiring Enterprise for larger teams.
  • Compute unit and seat-based pricing (developer vs. operator seats, worker compute units) adds pricing complexity beyond a flat monthly fee.
  • Email triggers are capped at 100/day on the free tier, limiting event-driven use cases without upgrading.
  • Smaller ecosystem of pre-built integrations compared to more established automation tools like n8n.

Pricing, plan by plan

Celigo

$400/month
  • Growth$400/month
    • 50 integrations
    • Basic support
  • Scale$1200/month
    • Unlimited integrations
    • Priority support
  • Enterprise$3000/month
    • Custom solutions
    • Dedicated support

Windmill

Free
  • Free / Open-sourceFree
    • Unlimited executions
    • Self-hosted deployment
    • Max 10 users with SSO
  • Enterprise$120/month
    • Unlimited executions and workspaces
    • Uncapped SSO seats
    • 24/7 priority support (3-hour response)

Which should you pick?

Choose Celigo if

  • You need app integration.
  • You work on Web, Mobile.
  • You also want process automation.
Celigo review

Choose Windmill if

  • You need script-to-workflow engine.
  • You want to start without paying.
  • You work on web, api, linux, windows, mac.
  • You also want auto-generated uis.
Windmill review

Questions people ask

Is Celigo or Windmill better?
Neither clearly leads. Celigo starts at $400/month and Windmill at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Celigo or Windmill?
Windmill has a free tier; the other does not. Paid plans start at $400/month for Celigo and Free for Windmill.
Does Celigo or Windmill run on more platforms?
Celigo runs on Web, Mobile. Windmill runs on web, api, linux, windows, mac.
Can I use Windmill for free?
Yes. Windmill has a free tier, so you can try it without paying. Celigo starts at $400/month.
What is Celigo best used for?
Celigo is most often used for integrating netsuite with ecommerce and crm systems, prebuilt integration templates between common business applications, building custom flows between internal systems, governance and auditability over integrations on the higher editions. Of those, integrating netsuite with ecommerce and crm systems and prebuilt integration templates between common business applications are not what Windmill is typically brought in for.
What can Celigo do that Windmill cannot?
Celigo covers App integration, Process automation, Master data management, API management. Windmill covers Script-to-workflow engine, Auto-generated UIs, Self-hosted deployment, Git sync.

Answered from the vendors’ own pages

Celigo: How much does Celigo cost?

Celigo pricing is not publicly disclosed; the vendor requires direct contact with sales to obtain pricing quotes based on your endpoint and workflow requirements.

Source
Windmill: What does Windmill cost?

Windmill's Free and Open-source edition is $0/month for self-hosted use with unlimited executions, while Enterprise starts at $120/month with unlimited workspaces and uncapped SSO seats, priced further by developer/operator seats and compute units.

Source
Celigo: What is Celigo's pricing model?

Celigo uses a flat-rate subscription model based on endpoints and flows, not per-transaction costs; customers must contact sales for actual pricing for each tier.

Source
Windmill: Is there a free plan and what are its limits?

The free self-hosted plan supports unlimited executions but caps SSO at 10 users, workspaces at 3, groups/permissions at 4, and email triggers at 100 per day.

Source
Celigo: Is there a free trial for Celigo?

Yes, Celigo offers a 30-day free trial with unlimited access to the platform; no credit card is required to start the trial.

Source
Windmill: How is usage metered on Windmill Enterprise?

Enterprise usage is metered through seats (developer seats at $20/month, operator seats at $10/month) and compute units, e.g. $100/month for 2 standard-worker compute units.

Source
Celigo: What are the Celigo pricing tiers?

Celigo offers Standard, Professional, and Enterprise editions; specific pricing for each is not published and requires sales contact, with Enterprise including unlimited endpoints and premium support.

Source
Windmill: What happens to a self-hosted Windmill deployment if the company shuts down?

The pricing page addresses this directly as an FAQ topic, noting that self-hosted applications built on the open-source edition can continue running independently of Windmill the company.

Source
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